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Add a -print-lsr-output option to LLC, to print the output of the LSR pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35522 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -14,12 +14,16 @@
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/PassManager.h"
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#include "llvm/Pass.h"
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#include "llvm/Assembly/PrintModulePass.h"
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#include "llvm/Analysis/LoopPass.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Transforms/Scalar.h"
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#include "llvm/Support/CommandLine.h"
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using namespace llvm;
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static cl::opt<bool> PrintLSR("print-lsr-output");
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FileModel::Model
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LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
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std::ostream &Out,
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@ -28,7 +32,11 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
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// Standard LLVM-Level Passes.
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// Run loop strength reduction before anything else.
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if (!Fast) PM.add(createLoopStrengthReducePass(getTargetLowering()));
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if (!Fast) {
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PM.add(createLoopStrengthReducePass(getTargetLowering()));
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if (PrintLSR)
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PM.add(new PrintFunctionPass("\n\n*** Code after LSR *** \n", &cerr));
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}
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// FIXME: Implement efficient support for garbage collection intrinsics.
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PM.add(createLowerGCPass());
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